<?php
/**
 * @author      Komma <info@komma.pro>
 * @copyright   (c) 2012-2016, Komma
 */

namespace App\Komma\Posts\Models;

use App\Helpers\KommaHelpers;
use App\Komma\Documents\DocumentsTrait;
use App\Komma\Documents\Kms\DocumentableInterface;
use App\Komma\Employees\Models\Employee;
use App\Komma\Kms\Core\AbstractTranslatableModel;
use App\Komma\Kms\Core\Entities\DisplayNameInterface;
use App\Komma\Kms\Core\Entities\DisplayNameTrait;
use App\Komma\Languages\Models\Language;
use App\Komma\Sites\HasSitesInterface;
use App\Komma\Sites\Models\Site;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\Relations\HasOne;
use Illuminate\Support\Str;

/**
 * Class Page
 *
 * @property int site_id
 * @property int lft
 * @property int rgt
 * @property int tree
 * @property-read \Carbon $date
 * @property-read \Illuminate\Database\Eloquent\Collection|\App\Komma\Languages\Models\Language[] $languages
 * @property-read \Illuminate\Database\Eloquent\Collection|\App\Komma\Sites\Models\Site[] $sites
 * @property-read \Illuminate\Database\Eloquent\Collection|\App\Komma\Posts\Models\PostTranslation[] $translations
 * @mixin \Eloquent
 * @property int $id
 * @property int $active
 * @property \Carbon\Carbon|null $created_at
 * @property \Carbon\Carbon|null $updated_at
 * @method static \Illuminate\Database\Eloquent\Builder|\App\Komma\Posts\Models\Post whereActive($value)
 * @method static \Illuminate\Database\Eloquent\Builder|\App\Komma\Posts\Models\Post whereCreatedAt($value)
 * @method static \Illuminate\Database\Eloquent\Builder|\App\Komma\Posts\Models\Post whereDate($value)
 * @method static \Illuminate\Database\Eloquent\Builder|\App\Komma\Posts\Models\Post whereId($value)
 * @method static \Illuminate\Database\Eloquent\Builder|\App\Komma\Posts\Models\Post whereUpdatedAt($value)
 * @property-read \Illuminate\Database\Eloquent\Collection|\App\Komma\Documents\Models\Document[] $documents
 * @property-read \Illuminate\Database\Eloquent\Collection|\App\Komma\Documents\Models\Document[] $images
 * @method static \Illuminate\Database\Eloquent\Builder|\App\Komma\Posts\Models\Post newModelQuery()
 * @method static \Illuminate\Database\Eloquent\Builder|\App\Komma\Posts\Models\Post newQuery()
 * @method static \Illuminate\Database\Eloquent\Builder|\App\Komma\Posts\Models\Post query()
 */
class Post extends AbstractTranslatableModel implements HasSitesInterface, DocumentableInterface, DisplayNameInterface
{
    use DocumentsTrait;
    use DisplayNameTrait;

    protected $table = 'posts';

    protected $class = self::class;

    protected $fillable = ['date', 'employee_id'];

    protected $dates = ['date'];

    /**
     * Gets the translation models for this model
     *
     * @return HasMany that resolves to AbstractTranslationModel instances
     */
    public function translations(): HasMany
    {
        return $this->hasMany(PostTranslation::class);
    }

    public function languages(): BelongsToMany
    {
        return $this->belongsToMany(Language::class, 'post_translations')
            ->withPivot('slug', 'name', 'description')
            ->withTimestamps();
    }

    /**
     * Get the fallback translation model (English: 40).
     *
     * @throws \RuntimeException
     */
    public function fallback_translation(): HasOne
    {
        // Note: Use magic number 40 as english translation
        return $this->hasOne(PostTranslation::class)->where('language_id', '=', 40);
    }

    public function employee(): BelongsTo
    {
        return $this->belongsTo(Employee::class)->where('id', '=', $this->employee_id);
    }

    /**
     * Get the site or sites for this model
     *
     * @return BelongsToMany
     */
    public function sites(): BelongsToMany
    {
        return $this->belongsToMany(Site::class);
    }

    /**
     * Get the name for the sidebar
     *
     * @return string
     */
    public function getSidebarName():string
    {
        // If there is no name defined generate a generic name
        if (! $sideBarName = $this->getDisplayName()) {
            $sideBarName = trans('kms/'.Str::camel($this->table).'.entity').' '.$this->id;
        }

        if (strlen($sideBarName) > 50) {
            $sideBarName = KommaHelpers::str_limit_full_word($sideBarName, 45);
        }

        $sideBarName .= '<br/><sub>'.$this->date->format('d-m-Y').'</sub>';

        return $sideBarName;
    }

    /**
     * Some logic that makes it possible to overrule images by translation images
     *
     * @return \Illuminate\Database\Eloquent\Collection|null
     */
    public function languageImages()
    {
        // Load and check that there are images
        $this->load('images');
        if (! isset($this->images) || $this->images->isEmpty()) {
            return null;
        }

        // First grab the global defined images
        $globalImages = $this->images->where('key', 'Documents-posts');

        // Then grab the translation images
        $translationImages = $this->images->where('key', 'Documents-postTranslation-'.\App::getLocale());

        // If there are translation images we return those
        if (isset($translationImages) && $translationImages->isNotEmpty()) {
            return $translationImages->values();
        }

        // Else we return the global images
        return $globalImages->values();
    }

    public function socialMediaImage()
    {
        // Check if loaded else load
        if (! isset($this->images)) {
            $this->load('images');
        }

        // Check that there are images
        if (! isset($this->images) || $this->images->isEmpty()) {
            return null;
        }

        // Then grab the translation images
        $socialMediaImage = $this->images->where('key', 'Documents-postTranslationSocial-'.\App::getLocale());

        // If there are translation images we return those
        if (isset($socialMediaImage) && $socialMediaImage->isNotEmpty()) {
            return $socialMediaImage->values();
        }

        return $this->languageImages();
    }
}